Otomotiv Teknolojisi Bölümü Koleksiyonu

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https://dspace.mudanya.edu.tr/handle/20.500.14362/201

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Browsing Otomotiv Teknolojisi Bölümü Koleksiyonu by Publisher "Wiley"

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    Development of Self-Healing Thermoplastic Composites With Reactive Thermoplastic Agent-Filled Macrocapsules
    (Wiley, 2025-05) Şahin, Eslem; Boztoprak, Yalçın; Yazıcı, Murat; 414011
    Self-healing materials, which introduce a new approach to innovative materials, can aid in the repair of polymers and composites, leading to the development of more durable and reliable products. In polymer matrix composites, healing micro- or macrocracks helps to eliminate structural defects. A reactive healing agent and curing agent distributed within the thermoplastic matrix can react at the crack site, providing repair without external intervention. Acrylic resin and polypropylene were selected for this study to evaluate the potential of healing in industrial thermoplastics. Capsules filled with a reactive agent containing 3% by weight diethylenetriamine (DETA) were embedded in the matrix. When damaged, these capsules broke, and the liquid agents seeped into the cracks through the filling voids. The reaction released immediate heat, initiated curing, and filled the damaged area. Complete curing occurred after 8 h. The energy absorption of specimens in both damaged and undamaged states was observed through compression testing. The heat generated by the agents flowing from the capsules during the compression test was monitored using a thermal camera. This study offers a new perspective on using reactive thermoplastic resins to develop self-healing composite materials.
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    Mechanical Responses of Recycled Core Sandwich Structures With Hybrid Composite Facings: A Study of Quasi-Static and Dynamic Behavior
    (Wiley, 2025-12) Ceylan, Büşra Tansu; Türkoğlu, Kürşad; Yazıcı, Murat; Ertan, Rukiye; 426716
    In this study, a sandwich composite structure was developed by combining a recycled, self-skinned corrugated polypropylene (PP) core with face sheets made from woven hybrid composites of glass, carbon, and aramid fibers. The face sheets were fabricated using the Vacuum-Assisted Resin Transfer Molding (VARTM) process following an optimized stacking sequence, and subsequently integrated with the core using an EVA-based thermoplastic adhesive. The performance of the produced structures was evaluated through quasi-static and dynamic three-point bending tests, as well as edge compression tests. The findings indicate that the interaction among the different fiber layers enhances interfacial integrity and improves structural stability. The obtained results reveal that integrating the hybrid face sheets with the core enhances the structural durability and positively influences the energy absorption and deformation behavior of the material. The structure developed in this context aims to be evaluated as a potential alternative for producing recyclable, environmentally sustainable, and functional components in the automotive industry, particularly in structures such as electric vehicle battery boxes. Additionally, the study presents a novel approach to the reuse of recycled thermoplastic cores in advanced engineering applications.